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a trader commenced business on April 1, 2020 with 1,20,000 represented by 6,000 units of a certain product at 20 per unit. During the year 2020-21 he sold these units at 30/- per unit and had withdrawn 60,000. The price of the product at the end of financial year was 25/- per unit. Compute retained profit of the trader under the concept of physical capital maintenance at current cost. Also state, whether answer would be different if the trader had not withdrawn any amount